.all {
    display: flex;
    -webkit-perspective: 10px;
    perspective: 10px;
    -webkit-transform: perspective(300px) rotateX(20deg);
    transform: perspective(300px) rotateX(20deg);
    will-change: perspective;
    -webkit-perspective-origin: center center;
    perspective-origin: center center;
    transition: all 1.3s ease-out;
    justify-content: center;
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
    margin: 200px;
}

.all:hover {
    -webkit-perspective: 1000px;
    perspective: 1000px;
    transition: all 1.3s ease-in;
    -webkit-transform: perspective(10000px) rotateX(0deg);
    transform: perspective(10000px) rotateX(0deg);
}

.all:hover .text {
    opacity: 1;
}

.all:hover>div {
    opacity: 1;
    transition-delay: 0s;
}

.all:hover .explainer {
    opacity: 0;
}

.left,
.center,
.right,
.lefter,
.righter {
    width: 200px;
    height: 150px;
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
    border-radius: 10px;
    border: 1px solid #fff;
    box-shadow: 0 0 20px 5px rgba(100, 100, 255, 0.4);
    opacity: 0;
    transition: all .3s ease;
    transition-delay: 1s;
    position: relative;
    background-position: center center;
    background-size: contain;
    background-repeat: no-repeat;
    background-color: #58d;
    cursor: pointer;
    background-blend-mode: color-burn;
}

.left:hover,
.center:hover,
.right:hover,
.lefter:hover,
.righter:hover {
    box-shadow: 0 0 30px 10px rgba(100, 100, 255, 0.6);
    background-color: #ccf;
}

.text {
    -webkit-transform: translateY(30px);
    transform: translateY(30px);
    opacity: 0;
    transition: all .3s ease;
    bottom: 0;
    left: 5px;
    position: absolute;
    will-change: transform;
    color: #fff;
    text-shadow: 0 0 5px rgba(100, 100, 255, 0.6);
}

.lefter {
    -webkit-transform: translateX(-60px) translateZ(-50px) rotateY(-10deg);
    transform: translateX(-60px) translateZ(-50px) rotateY(-10deg);
    background-image: url(../img/organization-512.png);
}

.left {
    -webkit-transform: translateX(-30px) translateZ(-25px) rotateY(-5deg);
    transform: translateX(-30px) translateZ(-25px) rotateY(-5deg);
    background-image: url(../img/creative_draw-512.png);
}

.center {
    opacity: 1;
    background-image: url(../img/app_window-512.png);
}

.right {
    -webkit-transform: translateX(30px) translateZ(-25px) rotateY(5deg);
    transform: translateX(30px) translateZ(-25px) rotateY(5deg);
    background-image: url(../img/cloud_weather-512.png);
}

.righter {
    -webkit-transform: translateX(60px) translateZ(-50px) rotateY(10deg);
    transform: translateX(60px) translateZ(-50px) rotateY(10deg);
    background-image: url(../img/search-512.png);
}

.explainer {
    font-weight: 300;
    font-size: 2rem;
    color: #fff;
    transition: all .6s ease;
    width: 100%;
    height: 100%;
    background-color: #303050;
    background-image: radial-gradient(circle at center top, #cce, #33a);
    border-radius: 10px;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
}

.ref {
    background-color: #000;
    background-image: linear-gradient(to bottom, #d80, #c00);
    border-radius: 3px;
    padding: 7px 10px;
    position: absolute;
    font-size: 16px;
    bottom: 10px;
    right: 10px;
    color: #fff;
    text-decoration: none;
    text-shadow: 0 0 3px rgba(0, 0, 0, 0.4);
}

.ref::first-letter {
    font-size: 12px;
}

/* 程序员绘制 */

.human {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  position: absolute;
  bottom: 2.5vmax;
  left: 27.5%;
  width: 21vmax;
  height: 30vmax;
  z-index: 1000;
}
.human__head {
  position: relative;
  display: flex;
  justify-content: center;
  width: 25%;
  height: 6vmax;
  z-index: 6000;
}
.human__head::before {
  content: '';
  position: absolute;
  width: .2vmax;
  height: .4vmax;
  bottom: 13%;
  border-radius: 50%;
  background-color: #2E2250;
  z-index: 2000;
}
.human__hair-b {
  position: absolute;
  top: -4%;
  width: 7vmax;
  height: 6vmax;
  border-top-left-radius: 50%;
  border-top-right-radius: 50%;
  border-bottom-left-radius: 40%;
  border-bottom-right-radius: 40%;
  background-color: #2E2250;
}
.human__hair-b::before, .human__hair-b::after {
  content: '';
  position: absolute;
  width: 7vmax;
  height: 7vmax;
  border-top-left-radius: 40%;
  border-top-right-radius: 40%;
  border-bottom-left-radius: 30%;
  border-bottom-right-radius: 30%;
  background-color: #2E2250;
  border-left: 1vmax solid #423352;
  animation: hair 1s infinite alternate;
}
.human__hair-b::before {
  transform: rotateZ(-20deg);
}
.human__hair-b::after {
  transform: rotateZ(20deg);
}
.human__hair-c {
  position: absolute;
  top: -5%;
  z-index: -1;
  width: 110%;
  height: 1.5vmax;
  overflow: hidden;
  border-radius: 50%;
}
.human__hair {
  width: 100%;
  height: 3vmax;
  background-color: #2E2250;
  border-radius: 50%;
}
.human__face {
  position: absolute;
  display: flex;
  justify-content: center;
  top: 7%;
  height: 90%;
  width: 65%;
  border-radius: 45%;
  background-color: #FFC4C5;
  border-bottom: 0.6vmax solid #2E2250;
  border-left: 0.15vmax solid #2E2250;
  border-right: 0.15vmax solid #2E2250;
}
.human__eye-l, .human__eye-r {
  position: absolute;
  top: 45%;
  width: .3vmax;
  height: .5vmax;
  background-color: #2E2250;
  border-radius: 50%;
  animation: eye 4s infinite alternate;
}
.human__eye-l {
  left: 22%;
}
.human__eye-r {
  right: 22%;
}
.human__nose {
  position: absolute;
  width: .5vmax;
  height: 1.5vmax;
  bottom: 20%;
  border-radius: 50%;
  background-color: #FFA0A5;
}
.human__cheeks-l, .human__cheeks-r {
  position: absolute;
  bottom: 8%;
  width: .8vmax;
  height: .9vmax;
  background-color: #FFB1B4;
  border-radius: 50%;
}
.human__cheeks-l {
  left: 10%;
}
.human__cheeks-r {
  right: 10%;
}
.human__mouth {
  position: absolute;
  bottom: 10%;
  width: .8vmax;
  height: 1vmax;
  border-bottom: 0.15vmax solid #600004;
  border-radius: 50%;
}
.human__eyebrow-l, .human__eyebrow-r {
  position: absolute;
  top: 30%;
  width: 1vmax;
  height: .8vmax;
  border-top: 0.15vmax solid #2E2250;
  border-radius: 50%;
}
.human__eyebrow-l {
  left: 10%;
}
.human__eyebrow-r {
  right: 10%;
}
.human__ears {
  position: absolute;
  justify-content: space-between;
  top: 8%;
  width: 21%;
}
.human__ear-l, .human__ear-r {
  position: absolute;
  top: 30%;
  width: 1vmax;
  height: 1vmax;
  border-radius: 50%;
  background-color: #FFA0A5;
}
.human__ear-l {
  left: 0%;
}
.human__ear-r {
  right: 0%;
}
.human__body-c {
  display: flex;
  justify-content: center;
  position: absolute;
  top: 17%;
  width: 100%;
  height: 11vmax;
  overflow: hidden;
  z-index: -1;
}
.human__body {
  position: relative;
  display: flex;
  justify-content: center;
  width: 96%;
  height: 22vmax;
  border-radius: 50%;
  border-left: 0.9vmax solid #FF9B5A;
  border-right: 1vmax solid #FF4624;
  background: linear-gradient(135deg, #FF4624 25%, transparent 25%) -1vmax 0, linear-gradient(225deg, #FF4624 25%, transparent 25%) -1vmax 0, linear-gradient(315deg, #FF4624 25%, transparent 25%), linear-gradient(45deg, #FF4624 25%, transparent 25%);
  background-size: 2vmax 2vmax;
  background-color: #FF552E;
  overflow: hidden;
}
.human__body::before {
  content: '';
  position: absolute;
  top: -2vmax;
  width: 4vmax;
  height: 4vmax;
  border-radius: 50%;
  background-color: #FFC4C5;
  border: 0.5vmax solid #FF371B;
}
.human__arm-l, .human__arm-r {
  position: absolute;
  bottom: 48%;
  width: 10vmax;
  height: 2.7vmax;
  background-color: #FFC4C5;
  z-index: 2000;
}
.human__arm-l {
  left: 0;
  border-right: 4vmax solid #FFB1B4;
  border-bottom: 0.7vmax solid #FFB1B4;
  border-radius: 2vmax;
  animation: arm-l 1s ease infinite alternate;
}
.human__arm-r {
  right: 2vmax;
  width: 2.25vmax;
  height: 1.5vmax;
  background-color: #dae4ed;
  border-top-left-radius: 2vmax;
  border-top-right-radius: 2vmax;
  animation: eye 2s infinite alternate;
}
.human__arm-r::before {
  content: '';
  position: absolute;
  width: 3.25vmax;
  height: 2vmax;
  background-color: #FFB1B4;
  bottom: 0;
  left: .5vmax;
  border-bottom: 0.7vmax solid #FFB1B4;
  border-top-left-radius: 2vmax;
  border-top-right-radius: 2vmax;
}
.human__legs {
  position: absolute;
  bottom: 1.3vmax;
  width: 100%;
  height: 10vmax;
  overflow: hidden;
}
.human__leg-l, .human__leg-r {
  position: absolute;
  bottom: -2vmax;
  width: 4.5vmax;
  height: 130%;
}
.human__leg-l {
  left: 3.3vmax;
  transform: rotateZ(-20deg);
  background-image: linear-gradient(80deg, transparent, transparent 35%, #001682 35%, #001682 40%, #001164 40%, #001164 90%);
  border-right: 0.5vmax solid #010a2a;
}
.human__leg-r {
  right: 3.3vmax;
  transform: rotateZ(20deg);
  background-image: linear-gradient(-80deg, transparent, transparent 35%, #001682 35%, #001682 40%, #001164 40%, #001164 90%);
  border-left: 0.5vmax solid #010a2a;
}
.human__shoes {
  display: flex;
  justify-content: space-between;
  position: absolute;
  bottom: 0;
  width: 45%;
  height: 2vmax;
}
.human__shoe-c {
  bottom: 0;
  height: 1.8vmax;
  width: 4.2vmax;
  overflow: hidden;
}
.human__shoe-c:nth-of-type(1) {
  animation: shoe-l 0.125s ease infinite alternate;
}
.human__shoe-l, .human__shoe-r {
  position: relative;
  height: 200%;
  width: 100%;
  border-radius: 50%;
  overflow: hidden;
  background-color: #2B165D;
}
.human__shoe-l::before, .human__shoe-r::before {
  content: '';
  position: absolute;
  width: 2.5vmax;
  height: 2vmax;
  top: -10%;
  background-color: #351C77;
  border-radius: 50%;
}
.human__shoe-l::before {
  left: -15%;
}
.human__shoe-r::before {
  right: -15%;
}

/*==================*/
.table {
  display: flex;
  justify-content: center;
  align-content: flex-start;
  flex-wrap: wrap;
  position: absolute;
  width: 33vmax;
  height: 15vmax;
  bottom: 2vmax;
  left: 7vmax;
  z-index: 1000;
}
.table__top {
  width: 100%;
  height: 1vmax;
  border-top: 0.1vmax solid #FFDC97;
  background-color: #2764cc;
}
.table__bottom {
  width: 95%;
  height: 2.5vmax;
  border-top: 0.75vmax solid #001164;
  background-color: #001B7A;
}
.table__legs {
  position: relative;
  display: flex;
  width: 90%;
  height: 11vmax;
}
.table__leg {
  position: absolute;
  top: 0;
  width: .6vmax;
  height: 100%;
  border-top: 0.75vmax solid #001164;
  background-color: #001B7A;
}
.table__leg:nth-of-type(1) {
  left: 1%;
}
.table__leg:nth-of-type(2) {
  left: 9%;
}
.table__leg:nth-of-type(3) {
  left: 88%;
}
.table__leg:nth-of-type(4) {
  left: 96%;
}

/*==================*/
.laptop {
  display: flex;
  justify-content: center;
  align-items: center;
  position: absolute;
  top: -6.1vmax;
  left: 13vmax;
  width: 11vmax;
  height: 6vmax;
  background-color: #dae4ed;
  border-top: 0.2vmax solid #FFDC97;
  border-left: 0.2vmax solid #FFDC97;
  overflow: hidden;
}
.laptop::before {
  content: '';
  position: absolute;
  height: 1vmax;
  width: 1vmax;
  border-radius: 50%;
  background-color: #dae4ed;
  z-index: 100;
}
.laptop::after {
  content: '';
  position: absolute;
  right: 20%;
  bottom: -40%;
  height: 300%;
  width: 300%;
  border-radius: 50%;
  background-color: #FFFFFF;
}

/*==================*/
.cup {
  position: absolute;
  top: -2.6vmax;
  left: 5vmax;
  width: 2vmax;
  height: 2.5vmax;
  background-image: linear-gradient(to bottom, #008C9A, #008C9A 10%, #04798c 10%, #04798c 20%, #008C9A 20%, #008C9A 80%, #04798c 80%, #04798c 90%, #008C9A 90%);
}
.cup::before {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(-135deg, rgba(255, 220, 151, 0.5), rgba(255, 220, 151, 0.1), rgba(255, 220, 151, 0));
}
.cup::after {
  content: '';
  position: absolute;
  right: -.7vmax;
  top: .25vmax;
  width: .9vmax;
  height: 1.5vmax;
  border-top: 0.2vmax solid #04798c;
  border-bottom: 0.2vmax solid #008C9A;
  border-right: 0.2vmax solid #008C9A;
  border-left: .2vmax solid transparent;
  border-radius: 45%;
  z-index: -1;
}

/*==================*/
.chair {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  position: absolute;
  width: 12vmax;
  height: 14vmax;
  bottom: 2vmax;
  left: calc(50% - 8vmax);
}
.chair__top {
  position: relative;
  width: 100%;
  height: 5vmax;
  border-bottom: 0.7vmax solid #005788;
  background-color: #010109;
}
.chair__top::before {
  content: '';
  position: absolute;
  bottom: .1vmax;
  right: 0;
  width: 80%;
  height: 35%;
  border-radius: 100% 0% 100% 0%/82% 100% 0% 18%;
  background-color: #010a2a;
}
.chair__line {
  width: .7vmax;
  height: 7.2vmax;
  border-top: 0.7vmax solid #00467F;
  border-left: 0.15vmax solid #005788;
  border-right: 0.15vmax solid #005788;
  background-image: repeating-linear-gradient(to bottom, #005788, #005788 4%, #00467F 4%, #00467F 6%);
}
.chair__base {
  position: relative;
  width: 100%;
  height: .7vmax;
  border-bottom: 0.2vmax solid #00467F;
  background-color: #005788;
}
.chair__wheels {
  position: absolute;
  bottom: 1vmax;
  width: 100%;
  height: .7vmax;
  z-index: -1;
}
.chair__wheel {
  position: absolute;
  height: .8vmax;
  width: .8vmax;
  top: .4vmax;
  border-radius: 50%;
  background-color: #001164;
}
.chair__wheel:nth-of-type(1) {
  left: .4vmax;
}
.chair__wheel:nth-of-type(2) {
  right: .4vmax;
}

/*==================*/
.trashcan {
  position: absolute;
  width: 3.5vmax;
  height: 6vmax;
  bottom: 2.5vmax;
  left: 13.5vmax;
  background-image: repeating-linear-gradient(to bottom, #010a2a 0vmax, #010a2a 0.4vmax, #001164 0.4vmax, #001164 0.45vmax);
  transform: perspective(350px) rotateX(-40deg);
  transform-origin: bottom center;
}
.trashcan::before {
  content: '';
  position: absolute;
  left: calc(0%  - .2vmax);
  width: 115%;
  height: .2vmax;
  background-color: #001682;
}

/*==================*/
.window {
  display: flex;
  justify-content: center;
  align-items: center;
  position: absolute;
  top: 2.5vmax;
  right: 2.5vmax;
  width: 23.5vmax;
  height: 28vmax;
  border: 0.1vmax solid #001164;
}
.window__container {
  width: 98%;
  height: 98%;
  border: 0.2vmax solid #0F1316;
  background-image: linear-gradient(-45deg, #010109, #010516);
  box-shadow: inset -0.1vmax -0.1vmax 0 #FFDC97;
}
.window__container::before {
  content: '';
  position: absolute;
  top: 30%;
  width: 100%;
  height: .5vmax;
  background-color: #0F1316;
}
.window__container::after {
  content: '';
  position: absolute;
  left: calc(50% - .25vmax);
  height: 100%;
  width: .5vmax;
  background-color: #0F1316;
}

.building {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  position: absolute;
  bottom: .1vmax;
  right: .1vmax;
  width: 20%;
  height: 40%;
  padding: .75vmax .3vmax;
  border-top: 0.1vmax solid #0d0900;
  z-index: -1;
  overflow: hidden;
}
.building__window, .building__window-f {
  height: 1.5vmax;
  width: .75vmax;
  margin: .45vmax;
  border-top-left-radius: 40%;
  border-top-right-radius: 40%;
  background-color: #010a2a;
  border-bottom: 0.15vmax solid black;
  border-left: 0.15vmax solid black;
}
.building__window--active, .building__window-f--active {
  background-color: black;
}
.building__window-f {
  width: 39%;
  border-radius: 0;
  height: 1vmax;
}
.building__window-on-1 {
  animation: win 20s infinite alternate;
}
.building__window-on-2 {
  animation: win 12s infinite alternate;
}
.building__window-on-3 {
  animation: win 10s infinite alternate;
}
.building__window-on-4 {
  animation: win 15s infinite alternate;
}
.building:nth-of-type(1) {
  right: .1vmax;
  width: 25%;
  height: 65%;
  background-color: #020212;
}
.building:nth-of-type(2) {
  left: 15%;
  width: 36%;
  height: 30%;
  background-color: #020212;
}
.building:nth-of-type(3) {
  left: 40%;
  width: 40%;
  height: 50%;
  z-index: -2;
  background-color: #010109;
}
.building:nth-of-type(4) {
  left: 5%;
  width: 40%;
  height: 60%;
  background-color: black;
  z-index: -3;
}

/*==================*/
.lamp {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: absolute;
  top: 2vmax;
  left: 15vmax;
  width: 5vmax;
  height: 12vmax;
  animation: lamp 1s ease infinite alternate;
}
.lamp::before {
  content: '';
  position: absolute;
  width: 1vmax;
  height: 1vmax;
  left: calc(50% - .5vmax);
  bottom: 0;
  border-radius: 50%;
  background-color: #FFDC97;
}
.lamp__top {
  position: relative;
  display: flex;
  justify-content: center;
  width: .25vmax;
  height: 70%;
  background-color: #001164;
}
.lamp__light {
  position: absolute;
  width: 5vmax;
  height: 15vmax;
  bottom: -17.5vmax;
  background-image: linear-gradient(to bottom, rgba(255, 220, 151, 0.0075), rgba(255, 220, 151, 0.025));
  z-index: 4000;
  animation: light 4s ease infinite alternate;
}
.lamp__light::before, .lamp__light::after {
  content: '';
  position: absolute;
  width: 4vmax;
  height: 16vmax;
}
.lamp__light::before {
  top: -1vmax;
  right: 2vmax;
  transform: rotateZ(10deg);
  background-image: linear-gradient(to right, rgba(255, 220, 151, 0.1), rgba(255, 220, 151, 0.1), rgba(255, 220, 151, 0));
}
.lamp__light::after {
  top: -1vmax;
  left: 2vmax;
  transform: rotateZ(-10deg);
  background-image: linear-gradient(to left, rgba(255, 220, 151, 0.1), rgba(255, 220, 151, 0.1), rgba(255, 220, 151, 0));
}
.lamp__base-c {
  position: relative;
  width: 100%;
  height: 2.5vmax;
  overflow: hidden;
  border-bottom: 0.1vmax solid #FFDC97;
  padding-bottom: 1vmax;
}
.lamp__base {
  position: relative;
  width: 100%;
  height: 5vmax;
  border-radius: 50%;
  background-color: #001B7A;
  border-right: 1vmax solid #001164;
}

/*==================*/
.bricks {
  position: absolute;
  width: 100%;
  height: 100%;
}

.brick {
  position: absolute;
  width: 10vmax;
  height: 6vmax;
  top: 10%;
  left: 25%;
  z-index: -1;
  background-image: repeating-linear-gradient(to bottom, #001164, #001164 0.1vmax, transparent 0.1vmax, transparent 2vmax);
  opacity: .75;
}
.brick:nth-of-type(2) {
  top: 75%;
  left: 75%;
}
.brick::before, .brick::after {
  content: '';
  position: absolute;
  height: 2vmax;
  width: .1vmax;
  background-color: #001164;
  left: 25%;
}
.brick::after {
  left: 50%;
  bottom: 2vmax;
}

/**********************/
/**********************/
/**********************/
@keyframes lamp {
  0% {
    transform: rotate(-1deg);
    transform-origin: top center;
  }
  100% {
    transform: rotate(1deg);
    transform-origin: top center;
  }
}
@keyframes light {
  0%,70%,72%,100% {
    opacity: 1;
  }
  71% {
    opacity: .6;
  }
}
@keyframes eye {
  0%, 10%, 50%, 90%, 100% {
    transform: translateX(-0.1vmax);
  }
  30%, 60% {
    transform: translateX(0.1vmax);
  }
}
@keyframes hair {
  0% {
    border-left: 1vmax solid #423352;
  }
  100% {
    border-left: 0.9vmax solid #423352;
  }
}
@keyframes arm-l {
  0%, 45%, 60%, 80% {
    transform: rotateZ(0deg);
    transform-origin: bottom left;
  }
  50%, 100% {
    transform: rotateZ(-3deg);
    transform-origin: bottom left;
  }
}
@keyframes shoe-l {
  0% {
    transform: rotateZ(0deg);
    transform-origin: bottom right;
  }
  100% {
    transform: rotateZ(5deg);
    transform-origin: bottom right;
  }
}
@keyframes win {
  0%,50%, 91% {
    background-color: black;
  }
  60%,90% {
    background-color: #241a3e;
  }
}